Question

A cube of wood of side 10 cm fliats in water with 4.5 cm of its depth below the surface. And with its sides vertical . What is the density of wood? Density of water = 1.0*10^3kgm^-3

Answer 1

Answer:

450 kg/m³

Explanation:

side of cube= 10 cm= 0.1 m

volume of cube= 0.1*0.1*0.1=0.001 m³

Since a cube has all sides equal, it doesn't matter whether it is horizontal or vertical.

height of cube under water= 4.5 cm = 0.045 m

volume of cube under water = 0.045*0.1*0.1  [length and breadth will remain same]

= 0.00045 m³

Density of wood = part of volume submerged * density of water

part of volume submerged = 0.00045/0.001

= 0.45  [portion of cube under water]

∴ density of wood = 0.45 * 1000   [density of water]

=450 kg/m³

HOPE IT HELPS!!!

Answer 2

Explanation:

the answer

hope you understand this